WO2008076103A1 - Projecteur 2d/3d avec cylindre translucide rotatif pour polarisation de lumière alternée - Google Patents

Projecteur 2d/3d avec cylindre translucide rotatif pour polarisation de lumière alternée Download PDF

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Publication number
WO2008076103A1
WO2008076103A1 PCT/US2006/048038 US2006048038W WO2008076103A1 WO 2008076103 A1 WO2008076103 A1 WO 2008076103A1 US 2006048038 W US2006048038 W US 2006048038W WO 2008076103 A1 WO2008076103 A1 WO 2008076103A1
Authority
WO
WIPO (PCT)
Prior art keywords
polarized
sections
projector
hollow cylinder
clockwise circular
Prior art date
Application number
PCT/US2006/048038
Other languages
English (en)
Inventor
Youngshik Yoon
Charles Bryan Hunt
Mark Alan Schultz
Original Assignee
Thomson Licensing
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Licensing filed Critical Thomson Licensing
Priority to JP2009542729A priority Critical patent/JP5727140B2/ja
Priority to US12/448,002 priority patent/US9360609B2/en
Priority to EP06847682A priority patent/EP2122395A1/fr
Priority to KR1020097012593A priority patent/KR20090100361A/ko
Priority to PCT/US2006/048038 priority patent/WO2008076103A1/fr
Priority to CNA2006800566130A priority patent/CN101573641A/zh
Publication of WO2008076103A1 publication Critical patent/WO2008076103A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/18—Stereoscopic photography by simultaneous viewing
    • G03B35/26—Stereoscopic photography by simultaneous viewing using polarised or coloured light separating different viewpoint images
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/337—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using polarisation multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/363—Image reproducers using image projection screens
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3167—Modulator illumination systems for polarizing the light beam

Definitions

  • the invention relates generally to the generation of 3D images. More specifically, the invention relates to the conversion of 2D images into 3D images and projecting the 3D images.
  • a projected image may be enhanced with an appearance of depth by converting the projected image into a so-called 3D image.
  • This is generally accomplished by optically polarizing the images which are to be viewed by a viewer's left eye differently than the images which are to be viewed by a viewer's right eye.
  • the 3D effect is perceived by the viewer when the viewer views the polarized images through the use of polarized filter lenses, commonly configured as '3D viewing glasses' with a polarized filter for use with the left eye of the viewer and a differently polarized filter for use with the right eye of the viewer.
  • the left eye of the viewer sees only the light polarized appropriately for passage through the polarized filter associated with the left eye and the right eye of the viewer sees only the light polarized appropriately for passage through the polarized filter associated with the right eye of the viewer.
  • the above described method of displaying 3D images is known as passive 3D viewing where the projector alternates the left eye information with the right eye information at double the typical frame rate and a screen/filter/polarizing blocker in front of the projector's lenses alternates the polarization of the projected image in such a way that the image of each eye passes through the corresponding polarizing filter of the pair of passive stereo glasses discussed above.
  • An alternative to passive 3D viewing is active 3D viewing where «ach viewer wears glasses-with-LCD light shutters which work in synchronization with the projector so that when the projector displays the left eye image, the right eye shutter of the active-stereo eyewear is closed, and vice versa.
  • One problem with current systems for providing 3D images is that the projectionist must attach and configure an external special device to the standard projector, a costly and time consuming requirement which also leads to technical failure. Further, when the projectionist again desires to project only a 2D image, the special device must be manually removed or turned off.
  • FIG. 1 a typical three color prism 100 is shown.
  • Prism 100 is typically used with a three-chip digital micromirror device projector.
  • a light beam0 102 enters prism 100, and in reaction to known optical coating methods, is selectively reflected or transmitted depending on the wavelength of the light.
  • known total internal reflection techniques such as providing a small air gap between prism 100 components, may be used to control the reflection of the divided components of light beam 100.
  • each light beam 102 color '5 component is directed to and selectively reflected out of prism 100 by a digital micromirror device.
  • digital micromirror device 104 reflects a blue color component of light beam 102
  • digital micromirror device 106 reflects a green color component of light beam 102
  • digital micromirror device 108 reflects a red color component of light beam 102.
  • Each digital micromirror device 104, 106, 108 may be individually controlled in a known0 manner to produced a combined color image which is projected from prism 100.
  • the present invention is directed to a 3D image projector having a translucent rotatable hollow cylinder, the hollow cylinder having more than one differently polarized sections, and the projector being capable of passing a light beam generally orthogonally through a wall of the hollow cylinder.
  • Figure 1 is an orthogonal schematic illustration of a prism used for separating a light beam into three color components according to prior art
  • Figure 2 is an oblique schematic illustration of a polarization drum according to the present invention.
  • Figure 3 is an orthogonal schematic illustration of a 3D projector according to the present invention.
  • Polarizing drum 200 is a rotatable drum-like structure (or hollow cylinder) formed of translucent materials.
  • Drum " 200 is shown as a generally cylindrical band of material located in close proximity or next to a directional light transmission device (or light pipe) 202 for passing light through drum 200 by directing light generally orthogonal to an interior surface 204 of the drum 200 such that light passes through the translucent material and exits the drum 200 through an exterior surface 206 of the drum 200 (through a wall of the drum).
  • the drum is divided into radially alternating P-polarization sections 208 (or clockwise circular polarization sections) and S-polarization sections 210 (or counter-clockwise circular polarization sections).
  • a 2D image may be converted to a 3D image by transmitting the 2D image through the directional light transmission device 202 and subsequently through the polarization drum 200 while drum 200 is rotated about its central axis.
  • the drum 200 is rotated at a controlled speed so as to appropriately polarize each frame of images as either P-polarization or S- polarization by passing the image through sections 208, 210, respectively.
  • FIG. 3 in the drawings a 3D projector according to the present invention is illustrated.
  • Projector 300 comprises a light source 302 having a reflector 304, a directional light transmission device 306 similar to device 202, a polarizing drum 308 similar to drum 200, relay optics 310, a prism 312 similar to prism 100, and digital micromirror devices 314, 316, 318, similar to digital micromirror devices 104, 106, 108, respectively.
  • light source 302 emits a light beam 320 into directional light transmission device 306 which then directs the light through polarizing drum 308 as polarizing drum 308 rotates about its central axis.
  • the light beam 320 then travels through relay optics 310 which direct the light beam 320 into prism 312.
  • Prism 312 divides the light beam 320 into separate color components and directs the color components of the light beam 320 onto digital micromirror devices 314, 316, 318, which are associated with the colors blue, green, and red, respectively. As described above, the color components of light beam 320 are then subsequently directed out of prism 312 by digital micromirror devices 314, 316, 318.
  • the 3D image is perceived by a viewer of the projected image when the viewer wears polarized filter glasses (not shown) which allow only one of the P and S polarized portions of light through the glasses to each eye of the viewer.
  • the projector should present approximately twice the number of frames per second in 3D mode as opposed to a normal 2D mode since each eye will only see every other frame.
  • the projector can be used as a 2D projector by projecting image data containing only frames to be viewed by both eyes of the viewer simultaneously, by the viewer not wearing polarized filter glasses, and by optionally not rotating the polarization drum 306.
  • the rotation and/or attachment of the polarizing drum to the projector 300 may optionally be controlled by a software instruction and no further mechanical interaction by a user of the projector 300.
  • An aspect of the invention also includes the method of converting 2D images into 3D images, wherein a 2D image projected through the translucent polarized hollow cylinder (i.e. drum) as the hollow cylinder is rotated such that the projected 2D images are projected generally orthogonally through a wall of the hollow cylinder.
  • the method includes the 2D images being projected alternatingly through P-polarized and S-polarized sections of the hollow cylinder.
  • the projected 2D images can be projected alternatingly through clockwise circular polarized and counter-clockwise circular polarized sections of the hollow cylinder.
  • the images are projected into a prism configured to split a light beam into three primary color components and direct each of the primary color components to separate digital micromirror devices.
  • the step of selectively preventing rotation of the hollow cylinder in response to a software instruction can be included.
  • the rotatable hollow cylinder comprises a translucent wall having differently polarized sections.

Abstract

Projecteur d'image 3D ayant un cylindre creux rotatif translucide, le cylindre creux ayant des sections polarisées différemment, et le projecteur étant capable de faire passer un faisceau lumineux de façon généralement orthogonale à travers une paroi du cylindre creux.
PCT/US2006/048038 2006-12-18 2006-12-18 Projecteur 2d/3d avec cylindre translucide rotatif pour polarisation de lumière alternée WO2008076103A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2009542729A JP5727140B2 (ja) 2006-12-18 2006-12-18 交互の光偏光のための回転半透明シリンダーを有する二次元／三次元プロジェクター
US12/448,002 US9360609B2 (en) 2006-12-18 2006-12-18 2D/3D projector with rotating translucent cylinder for alternating light polarisation
EP06847682A EP2122395A1 (fr) 2006-12-18 2006-12-18 Projecteur 2d/3d avec cylindre translucide rotatif pour polarisation de lumière alternée
KR1020097012593A KR20090100361A (ko) 2006-12-18 2006-12-18 교대로 편광하기 위한 회전 반투명 실린더를 갖는 2ｄ/3ｄ 프로젝터
PCT/US2006/048038 WO2008076103A1 (fr) 2006-12-18 2006-12-18 Projecteur 2d/3d avec cylindre translucide rotatif pour polarisation de lumière alternée
CNA2006800566130A CN101573641A (zh) 2006-12-18 2006-12-18 具有使光偏振交变的旋转半透明筒体的二维/三维投影仪

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2006/048038 WO2008076103A1 (fr) 2006-12-18 2006-12-18 Projecteur 2d/3d avec cylindre translucide rotatif pour polarisation de lumière alternée

Publications (1)

Publication Number Publication Date
WO2008076103A1 true WO2008076103A1 (fr) 2008-06-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/048038 WO2008076103A1 (fr) 2006-12-18 2006-12-18 Projecteur 2d/3d avec cylindre translucide rotatif pour polarisation de lumière alternée

Country Status (6)

Country Link
US (1) US9360609B2 (fr)
EP (1) EP2122395A1 (fr)
JP (1) JP5727140B2 (fr)
KR (1) KR20090100361A (fr)
CN (1) CN101573641A (fr)
WO (1) WO2008076103A1 (fr)

Cited By (1)

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WO2010051017A1 (fr) * 2008-10-28 2010-05-06 Eastman Kodak Company Système de commutation de polarisation conservant une étendue optique et procédés apparentés

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CN101573641A (zh) 2006-12-18 2009-11-04 汤姆森特许公司 具有使光偏振交变的旋转半透明筒体的二维/三维投影仪
WO2008076114A1 (fr) * 2006-12-19 2008-06-26 Thomson Licensing Système de projection dmd à haute résolution
WO2008076113A1 (fr) * 2006-12-19 2008-06-26 Thomson Licensing Système de projection dmd à haute résolution et à large gamme de couleurs
JP5595907B2 (ja) * 2007-04-25 2014-09-24 トムソン ライセンシング 高い分解能の３ｄ投射システム
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JP5724245B2 (ja) * 2010-08-19 2015-05-27 株式会社リコー 光源装置、照明装置及び投影表示装置
CN102169237A (zh) * 2011-04-27 2011-08-31 上海丽恒光微电子科技有限公司 立体投影光学系统
CN103676450B (zh) * 2012-09-03 2017-03-29 上海蝶维影像科技有限公司 2d投影系统3d转换系统
CN103676451B (zh) * 2012-09-26 2016-08-17 上海蝶维影像科技有限公司 采用侧面透光的圆筒状调整器的3d转换系统
CN103676180A (zh) * 2012-09-26 2014-03-26 上海蝶维影像科技有限公司 圆偏振光学系统3d转换系统
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EP2122395A1 (fr) 2009-11-25
JP2010513980A (ja) 2010-04-30
CN101573641A (zh) 2009-11-04
US9360609B2 (en) 2016-06-07
JP5727140B2 (ja) 2015-06-03
KR20090100361A (ko) 2009-09-23

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